Astron. Astrophys. Suppl. Ser. 140, 355-372

The radio structures of southern 2-Jy radio sources:
New ATCA and VLA radio images

R. Morganti^1,2 - T. Oosterloo² - C.N. Tadhunter³ - R. Aiudi¹ - P. Jones⁴ - M. Villar-Martin⁵

Send offprint request: R. Morganti,
e-mail: morganti@nfra.nl

1 - Istituto di Radioastronomia, CNR, Via Gobetti 101, 40129 Bologna, Italy
2 - Netherlands Foundation for Research in Astronomy, Postbus 2, 7990 AA Dwingeloo, The Netherlands
3 - Dept. Physics, University of Sheffield, Sheffield S3 7RH, UK
4 - Centre for Astronomy, University of Western Sydney, Nepean, PO Box 10, Kingswood, NSW 2747, Australia
5 - Institute d'Astrophysique de Paris (IAP), 98 bis Bd. Arago, 75014 Paris, France

Received May 20; accepted September 21, 1999

Abstract:

We present new radio images obtained with the Australia Telescope Compact Array (ATCA) and the Very Large Array (VLA) for a group of 14 galaxies belonging to the 2-Jy sample of radio sources. The new images improve the data already available on these objects and, in general, the database that we are building up on the sample. They will also be used for follow-up work where radio-optical comparison will be done.

We briefly discuss the core dominance parameter (R) for the objects for which the new data have given new information and, in particular, for broad line radio galaxies (BLRG). One of the BLRG does not show a core, even at 3 cm, and this is at variance with the general tendency of BLRG to have relatively strong cores. The depolarization is also discussed for a group of small double-lobed radio galaxies.

Key words: galaxies: active -- radio continuum: galaxies -- polarisation